So, I'm having a hell of a time figuring this button out. I'm trying to use an OEM cruise control button with plug/pigtails to turn on an aftermarket relay-powered foglight set. I have knowledge in car audio and lighting installs, so it's a bit embarrassing that I can't figure this out. The fog lights WORK. The button lights do not, and the car I pulled it from had working button backlight and indicator light. Am I reading this diagram right? On the switch, green wire is load, black/yellow is supply for that load. The green indicator light turns on when the load circuit is closed via 12+ from the load wire side of the switch and the ground (black). Red/ black wire is 12+ for "Cruise" backlit words light, and it's red wire ground is controlled by the dimmer for the dash, but grounding it with the black wire should turn it on.




Cruise control system




switch only view of the cruise control system





Actual wiring






My wiring diagram

 

Swapped a known-currently-to-be-working cruise control button out of my civic of the same style, and none of the lights work. Bonus: Now one of the backlit lights on the civic's button is popped! I thought these were 12v? Honda dealership confirmed that they are 14v bulbs, they're little incandescent suckers...